CLINICAL ANATOMY OF THE NORTH AMERICAN RIVER OTTER (LONTRA CANADENSIS)

2000 ◽  
Vol 31 (4) ◽  
pp. 473-483 ◽  
Keyword(s):  
North American ◽  
Lontra Canadensis ◽  
Clinical Anatomy ◽  
River Otter ◽  
The North ◽  
American River

scholarly journals Long-term Survival and Reproduction in a North American River Otter (Lontra canadensis) with an Intraperitoneal Radio-Transmitter

2011 ◽  
Vol 125 (3) ◽  
pp. 252 ◽  
Author(s):  
Jennifer A. Bohrman ◽  
Sadie S. Stevens ◽  
Thomas L. Serfass
Keyword(s):  
North American ◽  
Lontra Canadensis ◽  
River Otter ◽  
Term Survival ◽  
Radio Transmitter ◽  
The North ◽  
American River ◽  
Survival And Reproduction ◽  
Radio Transmitters

Intraperitoneal implantation of radio-transmitters is a useful method of monitoring free-ranging aquatic and semi-aquatic mammals; however, some researchers are concerned about the physiological effects of such implants. Few studies have investigated the long-term consequences of intraperitoneal implants on survival or reproductive performance. An adult female North American River Otter (Lontra canadensis) surgically equipped with an intraperitoneal radio-transmitter and released in northwestern Pennsylvania in June 1990 as part of a reintroduction project was killed in March 1999. The North American River Otter was estimated to be 10 years old and was pregnant with two fetuses at the time of her death. Our observation suggests that wild North American River Otters surgically equipped with intraperitoneal radio-transmitters can live long after implantation of the radio-transmitter and continue to reproduce successfully.

LEPTOSPIRA, PARVOVIRUS, AND TOXOPLASMA IN THE NORTH AMERICAN RIVER OTTER (LONTRA CANADENSIS) IN NORTH CAROLINA, USA

2020 ◽  
Vol 56 (4) ◽  
Author(s):  
Charles W. Sanders ◽  
Colleen Olfenbuttel ◽  
Krishna Pacifici ◽  
George R. Hess ◽  
Robert S. Livingston ◽  
...  
Keyword(s):  
North Carolina ◽  
North American ◽  
Lontra Canadensis ◽  
River Otter ◽  
The North ◽  
American River

NEPHROLITHIASIS IN FREE-RANGING NORTH AMERICAN RIVER OTTER (LONTRA CANADENSIS) IN NORTH CAROLINA, USA

2014 ◽  
Vol 45 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Jennifer N. Niemuth ◽  
Charles W. Sanders ◽  
Charles B. Mooney ◽  
Colleen Olfenbuttel ◽  
Christopher S. DePerno ◽  
...  
Keyword(s):  
North Carolina ◽  
North American ◽  
Lontra Canadensis ◽  
River Otter ◽  
American River ◽  
Free Ranging

Running energetics of the North American river otter: do short legs necessarily reduce efficiency on land?

2002 ◽  
Vol 133 (2) ◽  
pp. 203-212 ◽  
Author(s):  
Terrie M. Williams ◽  
M. Ben-David ◽  
S. Noren ◽  
M. Rutishauser ◽  
K. McDonald ◽  
...  
Keyword(s):  
North American ◽  
River Otter ◽  
The North ◽  
American River

scholarly journals Implantation and Parturition Dates of North American River Otters, Lontra canadensis, in Southern Missouri

2012 ◽  
Vol 126 (1) ◽  
pp. 28
Author(s):  
Nathan M. Roberts ◽  
Shawn M. Crimmins ◽  
David A. Hamilton ◽  
Elsa Gallagher
Keyword(s):  
North American ◽  
Lontra Canadensis ◽  
Crown Rump Length ◽  
Implantation Time ◽  
River Otters ◽  
The North ◽  
Harvest Dates ◽  
American River ◽  
Length Measurements ◽  
In The Wild

Despite numerous studies of reproductive dynamics of the North American River Otter (Lontra canadensis), relatively little information exists on the implantation or parturition dates of North American River Otters in the wild. We collected carcasses of North American River Otters that had been legally harvested in southern Missouri, USA, between 1997 and 1999 as part of a larger population dynamics study. Embryos (n = 28) were removed from a subset of North American River Otters (n = 9) during necropsy. Using harvest dates and crown–rump length measurements of embryos, we estimated implantation dates, which ranged from 7 December to 12 January, and parturition dates, which ranged from 8 February to 15 March (assuming an implantation time of 63 days). Our results are similar to other studies that have reported parturition dates ranging from mid-January to early May in more extreme latitudes. Our results suggest that variation in implantation and parturition dates among populations are likely related to factors affected by latitude such as photoperiod and winter weather severity.

PROGRESSIVE ATAXIA IN A CAPTIVE NORTH AMERICAN RIVER OTTER (LONTRA CANADENSIS) ASSOCIATED WITH BRAIN STEM SPHEROID FORMATION

2007 ◽  
Vol 38 (4) ◽  
pp. 579-582 ◽  
Author(s):  
Elvira Schettler ◽  
Kerstin Müller ◽  
Guido Fritsch ◽  
Stefan Kaiser ◽  
Leo Brunnberg ◽  
...  
Keyword(s):  
Brain Stem ◽  
North American ◽  
Lontra Canadensis ◽  
River Otter ◽  
Spheroid Formation ◽  
Progressive Ataxia ◽  
American River
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